Role of Calcitonin and Parathyroid Hormone in bone deposition and resorption
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step 1
PTH activates osteoclasts
calcitonin inhibits
osteoclast activity and bone resorption promotes bone deposition
step 3
release calcium to bone
Calcitonin is released by
thyroid glands if blood calcium levels increase
step 2
resorbs bone
Parathyroid hormone is released from
the parathyroid glands when blood calcium levels drop.
